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How Larval Mosquito Control Products are Applied

Mosquito larvae are only found in standing water, so mosquito larval control products are applied to water. These products are often applied by hand to small areas, such as backyard ponds and catch basins.

The District uses a helicopter to apply solid granular larvicide to larger areas where there is dense vegetation or where applying the product on foot might harm sensitive wildlife and habitats. Currently, a helicopter is used at Annex Lake, Mills Field, and Sharp Park golf course.

Materials used by the District are regulated by California Department of Public Health in conjunction with County of San Mateo Agricultural Commissioner, and are only applied by licensed, trained personnel.

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